Index: ext/libicpf/src/sha256.c =================================================================== diff -u -N --- ext/libicpf/src/sha256.c (revision e17c80d36eaa0430313e7d1058aa7a301d1510af) +++ ext/libicpf/src/sha256.c (revision 0) @@ -1,369 +0,0 @@ -/* - * FIPS-180-2 compliant SHA-256 implementation - * - * Copyright (C) 2001-2003 Christophe Devine - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include - -#include "sha256.h" - -#define GET_UINT32(n,b,i) \ -{ \ - (n) = ( (uint32) (b)[(i) ] << 24 ) \ - | ( (uint32) (b)[(i) + 1] << 16 ) \ - | ( (uint32) (b)[(i) + 2] << 8 ) \ - | ( (uint32) (b)[(i) + 3] ); \ -} - -#define PUT_UINT32(n,b,i) \ -{ \ - (b)[(i) ] = (uint8) ( (n) >> 24 ); \ - (b)[(i) + 1] = (uint8) ( (n) >> 16 ); \ - (b)[(i) + 2] = (uint8) ( (n) >> 8 ); \ - (b)[(i) + 3] = (uint8) ( (n) ); \ -} - -void sha256_starts( sha256_context *ctx ) -{ - ctx->total[0] = 0; - ctx->total[1] = 0; - - ctx->state[0] = 0x6A09E667; - ctx->state[1] = 0xBB67AE85; - ctx->state[2] = 0x3C6EF372; - ctx->state[3] = 0xA54FF53A; - ctx->state[4] = 0x510E527F; - ctx->state[5] = 0x9B05688C; - ctx->state[6] = 0x1F83D9AB; - ctx->state[7] = 0x5BE0CD19; -} - -void sha256_process( sha256_context *ctx, uint8 data[64] ) -{ - uint32 temp1, temp2, W[64]; - uint32 A, B, C, D, E, F, G, H; - - GET_UINT32( W[0], data, 0 ); - GET_UINT32( W[1], data, 4 ); - GET_UINT32( W[2], data, 8 ); - GET_UINT32( W[3], data, 12 ); - GET_UINT32( W[4], data, 16 ); - GET_UINT32( W[5], data, 20 ); - GET_UINT32( W[6], data, 24 ); - GET_UINT32( W[7], data, 28 ); - GET_UINT32( W[8], data, 32 ); - GET_UINT32( W[9], data, 36 ); - GET_UINT32( W[10], data, 40 ); - GET_UINT32( W[11], data, 44 ); - GET_UINT32( W[12], data, 48 ); - GET_UINT32( W[13], data, 52 ); - GET_UINT32( W[14], data, 56 ); - GET_UINT32( W[15], data, 60 ); - -#define SHR(x,n) ((x & 0xFFFFFFFF) >> n) -#define ROTR(x,n) (SHR(x,n) | (x << (32 - n))) - -#define S0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3)) -#define S1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10)) - -#define S2(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22)) -#define S3(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25)) - -#define F0(x,y,z) ((x & y) | (z & (x | y))) -#define F1(x,y,z) (z ^ (x & (y ^ z))) - -#define _R(t) \ -( \ - W[t] = S1(W[t - 2]) + W[t - 7] + \ - S0(W[t - 15]) + W[t - 16] \ -) - -#define P(a,b,c,d,e,f,g,h,x,K) \ -{ \ - temp1 = h + S3(e) + F1(e,f,g) + K + x; \ - temp2 = S2(a) + F0(a,b,c); \ - d += temp1; h = temp1 + temp2; \ -} - - A = ctx->state[0]; - B = ctx->state[1]; - C = ctx->state[2]; - D = ctx->state[3]; - E = ctx->state[4]; - F = ctx->state[5]; - G = ctx->state[6]; - H = ctx->state[7]; - - P( A, B, C, D, E, F, G, H, W[ 0], 0x428A2F98 ); - P( H, A, B, C, D, E, F, G, W[ 1], 0x71374491 ); - P( G, H, A, B, C, D, E, F, W[ 2], 0xB5C0FBCF ); - P( F, G, H, A, B, C, D, E, W[ 3], 0xE9B5DBA5 ); - P( E, F, G, H, A, B, C, D, W[ 4], 0x3956C25B ); - P( D, E, F, G, H, A, B, C, W[ 5], 0x59F111F1 ); - P( C, D, E, F, G, H, A, B, W[ 6], 0x923F82A4 ); - P( B, C, D, E, F, G, H, A, W[ 7], 0xAB1C5ED5 ); - P( A, B, C, D, E, F, G, H, W[ 8], 0xD807AA98 ); - P( H, A, B, C, D, E, F, G, W[ 9], 0x12835B01 ); - P( G, H, A, B, C, D, E, F, W[10], 0x243185BE ); - P( F, G, H, A, B, C, D, E, W[11], 0x550C7DC3 ); - P( E, F, G, H, A, B, C, D, W[12], 0x72BE5D74 ); - P( D, E, F, G, H, A, B, C, W[13], 0x80DEB1FE ); - P( C, D, E, F, G, H, A, B, W[14], 0x9BDC06A7 ); - P( B, C, D, E, F, G, H, A, W[15], 0xC19BF174 ); - P( A, B, C, D, E, F, G, H, _R(16), 0xE49B69C1 ); - P( H, A, B, C, D, E, F, G, _R(17), 0xEFBE4786 ); - P( G, H, A, B, C, D, E, F, _R(18), 0x0FC19DC6 ); - P( F, G, H, A, B, C, D, E, _R(19), 0x240CA1CC ); - P( E, F, G, H, A, B, C, D, _R(20), 0x2DE92C6F ); - P( D, E, F, G, H, A, B, C, _R(21), 0x4A7484AA ); - P( C, D, E, F, G, H, A, B, _R(22), 0x5CB0A9DC ); - P( B, C, D, E, F, G, H, A, _R(23), 0x76F988DA ); - P( A, B, C, D, E, F, G, H, _R(24), 0x983E5152 ); - P( H, A, B, C, D, E, F, G, _R(25), 0xA831C66D ); - P( G, H, A, B, C, D, E, F, _R(26), 0xB00327C8 ); - P( F, G, H, A, B, C, D, E, _R(27), 0xBF597FC7 ); - P( E, F, G, H, A, B, C, D, _R(28), 0xC6E00BF3 ); - P( D, E, F, G, H, A, B, C, _R(29), 0xD5A79147 ); - P( C, D, E, F, G, H, A, B, _R(30), 0x06CA6351 ); - P( B, C, D, E, F, G, H, A, _R(31), 0x14292967 ); - P( A, B, C, D, E, F, G, H, _R(32), 0x27B70A85 ); - P( H, A, B, C, D, E, F, G, _R(33), 0x2E1B2138 ); - P( G, H, A, B, C, D, E, F, _R(34), 0x4D2C6DFC ); - P( F, G, H, A, B, C, D, E, _R(35), 0x53380D13 ); - P( E, F, G, H, A, B, C, D, _R(36), 0x650A7354 ); - P( D, E, F, G, H, A, B, C, _R(37), 0x766A0ABB ); - P( C, D, E, F, G, H, A, B, _R(38), 0x81C2C92E ); - P( B, C, D, E, F, G, H, A, _R(39), 0x92722C85 ); - P( A, B, C, D, E, F, G, H, _R(40), 0xA2BFE8A1 ); - P( H, A, B, C, D, E, F, G, _R(41), 0xA81A664B ); - P( G, H, A, B, C, D, E, F, _R(42), 0xC24B8B70 ); - P( F, G, H, A, B, C, D, E, _R(43), 0xC76C51A3 ); - P( E, F, G, H, A, B, C, D, _R(44), 0xD192E819 ); - P( D, E, F, G, H, A, B, C, _R(45), 0xD6990624 ); - P( C, D, E, F, G, H, A, B, _R(46), 0xF40E3585 ); - P( B, C, D, E, F, G, H, A, _R(47), 0x106AA070 ); - P( A, B, C, D, E, F, G, H, _R(48), 0x19A4C116 ); - P( H, A, B, C, D, E, F, G, _R(49), 0x1E376C08 ); - P( G, H, A, B, C, D, E, F, _R(50), 0x2748774C ); - P( F, G, H, A, B, C, D, E, _R(51), 0x34B0BCB5 ); - P( E, F, G, H, A, B, C, D, _R(52), 0x391C0CB3 ); - P( D, E, F, G, H, A, B, C, _R(53), 0x4ED8AA4A ); - P( C, D, E, F, G, H, A, B, _R(54), 0x5B9CCA4F ); - P( B, C, D, E, F, G, H, A, _R(55), 0x682E6FF3 ); - P( A, B, C, D, E, F, G, H, _R(56), 0x748F82EE ); - P( H, A, B, C, D, E, F, G, _R(57), 0x78A5636F ); - P( G, H, A, B, C, D, E, F, _R(58), 0x84C87814 ); - P( F, G, H, A, B, C, D, E, _R(59), 0x8CC70208 ); - P( E, F, G, H, A, B, C, D, _R(60), 0x90BEFFFA ); - P( D, E, F, G, H, A, B, C, _R(61), 0xA4506CEB ); - P( C, D, E, F, G, H, A, B, _R(62), 0xBEF9A3F7 ); - P( B, C, D, E, F, G, H, A, _R(63), 0xC67178F2 ); - - ctx->state[0] += A; - ctx->state[1] += B; - ctx->state[2] += C; - ctx->state[3] += D; - ctx->state[4] += E; - ctx->state[5] += F; - ctx->state[6] += G; - ctx->state[7] += H; -} - -void sha256_update( sha256_context *ctx, uint8 *input, uint32 length ) -{ - uint32 left, fill; - - if( ! length ) return; - - left = ctx->total[0] & 0x3F; - fill = 64 - left; - - ctx->total[0] += length; - ctx->total[0] &= 0xFFFFFFFF; - - if( ctx->total[0] < length ) - ctx->total[1]++; - - if( left && length >= fill ) - { - memcpy( (void *) (ctx->buffer + left), - (void *) input, fill ); - sha256_process( ctx, ctx->buffer ); - length -= fill; - input += fill; - left = 0; - } - - while( length >= 64 ) - { - sha256_process( ctx, input ); - length -= 64; - input += 64; - } - - if( length ) - { - memcpy( (void *) (ctx->buffer + left), - (void *) input, length ); - } -} - -static uint8 sha256_padding[64] = -{ - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -void sha256_finish( sha256_context *ctx, uint8 digest[32] ) -{ - uint32 last, padn; - uint32 high, low; - uint8 msglen[8]; - - high = ( ctx->total[0] >> 29 ) - | ( ctx->total[1] << 3 ); - low = ( ctx->total[0] << 3 ); - - PUT_UINT32( high, msglen, 0 ); - PUT_UINT32( low, msglen, 4 ); - - last = ctx->total[0] & 0x3F; - padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last ); - - sha256_update( ctx, sha256_padding, padn ); - sha256_update( ctx, msglen, 8 ); - - PUT_UINT32( ctx->state[0], digest, 0 ); - PUT_UINT32( ctx->state[1], digest, 4 ); - PUT_UINT32( ctx->state[2], digest, 8 ); - PUT_UINT32( ctx->state[3], digest, 12 ); - PUT_UINT32( ctx->state[4], digest, 16 ); - PUT_UINT32( ctx->state[5], digest, 20 ); - PUT_UINT32( ctx->state[6], digest, 24 ); - PUT_UINT32( ctx->state[7], digest, 28 ); -} - -#ifdef TEST - -#include -#include - -/* - * those are the standard FIPS-180-2 test vectors - */ - -static char *msg[] = -{ - "abc", - "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", - NULL -}; - -static char *val[] = -{ - "ba7816bf8f01cfea414140de5dae2223" \ - "b00361a396177a9cb410ff61f20015ad", - "248d6a61d20638b8e5c026930c3e6039" \ - "a33ce45964ff2167f6ecedd419db06c1", - "cdc76e5c9914fb9281a1c7e284d73e67" \ - "f1809a48a497200e046d39ccc7112cd0" -}; - -int main( int argc, char *argv[] ) -{ - FILE *f; - int i, j; - char output[65]; - sha256_context ctx; - unsigned char buf[1000]; - unsigned char sha256sum[32]; - - if( argc < 2 ) - { - printf( "\n SHA-256 Validation Tests:\n\n" ); - - for( i = 0; i < 3; i++ ) - { - printf( " Test %d ", i + 1 ); - - sha256_starts( &ctx ); - - if( i < 2 ) - { - sha256_update( &ctx, (uint8 *) msg[i], - strlen( msg[i] ) ); - } - else - { - memset( buf, 'a', 1000 ); - - for( j = 0; j < 1000; j++ ) - { - sha256_update( &ctx, (uint8 *) buf, 1000 ); - } - } - - sha256_finish( &ctx, sha256sum ); - - for( j = 0; j < 32; j++ ) - { - sprintf( output + j * 2, "%02x", sha256sum[j] ); - } - - if( memcmp( output, val[i], 64 ) ) - { - printf( "failed!\n" ); - return( 1 ); - } - - printf( "passed.\n" ); - } - - printf( "\n" ); - } - else - { - if( ! ( f = fopen( argv[1], "rb" ) ) ) - { - perror( "fopen" ); - return( 1 ); - } - - sha256_starts( &ctx ); - - while( ( i = fread( buf, 1, sizeof( buf ), f ) ) > 0 ) - { - sha256_update( &ctx, buf, i ); - } - - sha256_finish( &ctx, sha256sum ); - - for( j = 0; j < 32; j++ ) - { - printf( "%02x", sha256sum[j] ); - } - - printf( " %s\n", argv[1] ); - } - - return( 0 ); -} - -#endif \ No newline at end of file